Pull ring lock for tool box

Abstract

This invention discloses a pull-ring lock for a toolbox. The lock includes a lock body mounted on the outer side panel of the drawer, a U-shaped pull ring rotatably connected to the outer side panel at both ends, a lock cylinder installed within a cavity of the outer side panel, a linkage mechanism, and an elastic structure. The lock cylinder has a linearly retractable latch at its bottom, and a positioning hole is provided on the bottom plate of the toolbox. The pull ring end has a hinge shaft and an inward-facing drive end. The pull ring rotating base includes a first base with a notch at the top and a second base with a hinge hole at the bottom. By flipping the pull ring, the drive end rotates within the second channel, driving the latch to extend downwards and embed into the positioning hole to lock, or it rotates into the notch of the first base to release the latch, causing it to retract under the preload of a coil spring to unlock. A push-type limiter is provided on the upper part of the outer side panel for locking the pull ring when it is closed. This invention has a simple structure, is easy to operate, and provides reliable locking, allowing for drawer locking and unlocking without a key.

Description

Technical Field

[0001] This invention belongs to the field of toolbox technology, and specifically relates to a pull ring lock for toolboxes. Background Technology

[0002] Toolboxes are indispensable storage devices in industry, maintenance, and daily life, and the security and ease of operation of their drawers have always been a key concern for those skilled in the art. For multi-drawer toolboxes, if drawers are not effectively locked during transportation or movement, they can easily slide out due to vibration or tilting, causing tools to scatter or even leading to safety accidents. Therefore, how to provide toolbox drawers with a simple, easy-to-operate, and reliable locking system has become an urgent technical problem to be solved.

[0003] In the existing technology, several toolbox drawer locking solutions have been disclosed. For example, a lever-type toolbox drawer locking mechanism has been disclosed, which controls all drawers uniformly through the lid, thus requiring only one mechanical lock to lock multiple drawers. However, this solution has the following drawbacks: First, the control mechanism needs to be connected to the action execution mechanism through a lever, resulting in a relatively complex structure that is inconvenient for manufacturing and assembly; second, the control mechanism itself consists of multiple components such as a force plate, force plate guide rail, retaining sleeve, and retaining plate, requiring a large number of components and high assembly precision; third, a mechanical lock is required for the lid, and the carrying and safekeeping of the key is still not convenient enough.

[0004] Another dial-open toolbox was disclosed. This solution uses an electronic lock to lock the lid, and the drawer is locked or unlocked by a pressure plate on the lid cooperating with a drawer control mechanism on the rear panel of the box. Although this solution does not require a key, its electronic lock and its associated sliding guide plate, locking plate, spring seat, and other components are relatively complex, resulting in high manufacturing costs. Furthermore, the reliability of the electronic components under harsh operating conditions is difficult to guarantee, making it unsuitable for long-term use in industrial environments.

[0005] Another example is a toolbox drawer lock device, which includes a lock cylinder and an actuator. The actuator consists of a locking bar, a fixed base, an L-shaped swing block, and a locking arm. The lock cylinder drives the L-shaped swing block through the locking bar, which in turn moves the locking arm up and down to interfere with the opening of the drawer. Although this solution has relatively few parts, both the lock cylinder and the actuator are located on the front panel of the toolbox, occupying a large space. Furthermore, the locking arm is arranged vertically and requires a stop for each drawer, which is structurally redundant for a single-drawer toolbox. In addition, the locking operation still requires a key, which is not convenient. Summary of the Invention

[0006] The purpose of this invention is to provide a pull-ring lock for toolboxes that directly drives the extension and retraction of the locking tongue through the flipping action of the pull ring 2, which is simple in structure, convenient to operate, and reliable in locking, effectively solving the technical problems of complex structure and inconvenient operation of existing toolbox locks.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A pull-ring lock for a toolbox, comprising: The lock body is installed on the outer panel of the toolbox drawer; The pull ring is U-shaped and rotatably connected to the outer side panel of the drawer at both ends. The pull ring has two states: in the locked state, it is attached to the drawer, and in the unlocked state, it flips outward. The lock cylinder is installed in the inner cavity of the outer side panel of the drawer. The bottom of the lock cylinder is provided with a lock tongue, which extends and retracts linearly toward the bottom plate of the toolbox. In the locked state, the lock tongue extends downward and is embedded in the positioning hole of the bottom plate of the toolbox. In the unlocked state, the lock tongue is fully retracted into the lock cylinder. A linkage mechanism is installed on the rotating end of the pull ring and rotates with the pull ring. The linkage mechanism is connected to the lock cylinder and is used to drive the lock cylinder to extend and retract up and down. In the unlocked state, the linkage mechanism separates the lock cylinder from the lock cylinder, freeing up space for the lock cylinder to move upward, so that the bolt retracts to the unlocked state. In the locked state, the linkage mechanism drives the lock cylinder downward, so that the bolt extends to the locked state. An elastic structure, mounted on the latch, is used to provide preload force to the latch away from the positioning hole.

[0008] The outer side of the outer plate is provided with a pull ring rotating base. The pull ring rotating base includes a first base at the top and a second base at the bottom. The bottom of the first base is provided with a notch, and the ends of both ends of the second base are provided with hinge holes. The two ends of the pull ring are respectively embedded in the hinge holes on the corresponding side, and the two are rotatably connected.

[0009] The two ends of the pull ring are bent inward and each end is provided with a hinge shaft, which is connected to a hinge hole. The side wall of the pull ring near the end is provided with an inward-facing drive end. In the unlocked state, the drive end is located in the notch, providing space for the top of the latch to rise. In the locked state, the drive end rotates and compresses the latch to extend downward to the bottom of the drawer.

[0010] The toolbox base plate has a downward-facing mounting hole, a positioning block is provided in the mounting hole, the positioning block has a through hole, the top of the lock tongue can move in and out of the through hole, the middle of the lock tongue has an annular protrusion, the bottom of the annular protrusion has an annular step that abuts against or separates from the top surface of the positioning block, which is used to position the downward extension distance of the lock tongue.

[0011] The elastic structure is a helical spring. The top of the helical spring abuts against the inner stepped surface of the through hole of the positioning block, and the bottom abuts against the bottom annular step of the annular protrusion, providing a preload force for the locking tongue to move away from the positioning hole. In the unlocked state, the helical spring pushes the locking tongue upward, and in the locked state, the linkage mechanism drives the locking tongue downward and squeezes the spring, so that the bottom annular step of the annular protrusion abuts against the top surface of the positioning block.

[0012] When the pull ring is in contact with the outer side panel of the drawer, the drawer and toolbox are locked; when the pull ring is perpendicular to the outer side panel of the drawer, the drawer and toolbox are unlocked.

[0013] The upper part of the outer side panel of the drawer is also provided with a push-button stop, which is used to lock the pull ring when it is in the retracted position.

[0014] The drawer's outer side panel has a passage that runs through the outer side wall and the inner side wall. The passage includes a first passage and a second passage that are connected. The top of the latch extends and retracts within the first passage, and the drive end of the pull ring rotates within the second passage. The outer opening of the second passage is located outside the outer side panel.

[0015] Compared with the prior art, the present invention has the following advantages: 1. This invention directly drives the extension and retraction of the locking tongue through the flipping action of the U-shaped pull ring, without the need for keys, passwords or electronic components. Operators only need to flip the pull ring with one hand to lock or unlock, making the operation extremely convenient. At the same time, the pull ring fits against the outer side panel of the drawer in the locked state, also serving as a handle, making it easy to pull out the drawer.

[0016] 2. The drive end of the pull ring is mechanically linked with the lock cylinder. When the pull ring is flipped, the drive end directly compresses or releases the lock tongue. The transmission path is short and the linkage efficiency is high. The lock tongue maintains a stable locked or unlocked state under the pre-tightening force of the elastic structure. In the locked state, the lock tongue is embedded in the positioning hole of the bottom plate to form a reliable mechanical limit and effectively prevent the drawer from sliding out.

[0017] 3. High space utilization and easy assembly: The lock cylinder is installed in the inner cavity of the outer panel of the drawer, and the pull ring rotating base is integrated on the outer side of the outer panel. The overall structure is compact and does not occupy the internal storage space of the drawer. The components are connected by plug-in, hinge and spring pre-tensioning, etc. The assembly process is simple, which is conducive to mass production and reduces manufacturing costs.

[0018] 4. High safety: By setting a press-type limiter on the upper part of the outer side plate, the pull ring can be locked when it is closed, preventing the pull ring from accidentally flipping and unlocking due to accidental touch or vibration, thus further improving the safety of use.

[0019] Preferably, the outer side of the outer plate is provided with a pull ring rotating base, which includes a first base at the top and a second base at the bottom. The bottom of the first base is provided with a notch, and the ends of both ends of the second base are provided with hinge holes. The two ends of the pull ring are respectively embedded in the hinge holes on the corresponding side, and the two are rotatably connected. The structure is compact, the notch provides clearance for the pull ring to flip to avoid interference, and the hinge holes and the pull ring ends are embedded and matched to make assembly simple and quick.

[0020] Preferably, the two ends of the pull ring are bent inward and each end is provided with a hinge shaft, the hinge shaft is connected to the hinge hole, and the side wall of the pull ring near the end is provided with an inward-facing drive end; in the unlocked state, the drive end is located in the notch, providing space for the top of the latch to rise; in the locked state, the drive end rotates and compresses the latch to extend downward to the bottom of the drawer, the hinge shaft and the hinge hole rotate in a stable and reliable manner, the drive end is built into the channel to make the transmission path short and efficient, and automatically rotates into the notch to release the space for the latch to rise when unlocking.

[0021] Preferably, the toolbox base plate has a downward-facing mounting hole, a positioning block is provided within the mounting hole, the positioning block has a through hole, the top of the latch moves movably within and outside the through hole, and the middle of the latch has an annular protrusion, the bottom of which has an annular step abutting against or separating from the top surface of the positioning block, for positioning the downward extension distance of the latch. The through hole guides the latch to extend and retract precisely in a straight line, and the abutment between the annular protrusion and the top surface of the positioning block effectively limits the extension distance of the latch.

[0022] Preferably, the elastic structure is a helical spring. The top of the helical spring abuts against the inner stepped surface of the through hole of the positioning block, and the bottom abuts against the bottom annular step of the annular protrusion, providing preload force to keep the latch away from the positioning hole. In the unlocked state, the helical spring pushes the latch upward; in the locked state, the linkage mechanism drives the latch downward and compresses the spring, causing the bottom annular step of the annular protrusion to abut against the top surface of the positioning block. The spring sleeve on the latch makes the layout compact, and the use of the inner stepped surface of the positioning block as a spring seat eliminates the need for additional parts. The stable preload force ensures automatic reset upon unlocking and reliable limit locking.

[0023] Preferably, when the pull ring is in contact with the outer side panel of the drawer, the drawer and toolbox are locked; when the pull ring is perpendicular to the outer side panel of the drawer, the drawer and toolbox are unlocked. The states are intuitive and easy for the operator to quickly identify. When in contact, the pull ring also serves as a handle, offering two functions; when unlocked perpendicularly, it facilitates the drawer's movement.

[0024] Preferably, the upper part of the outer side panel of the drawer is also provided with a press-type limiting member, which is used to lock the pull ring when it is in the retracted position; effectively preventing vibration from causing the pull ring to accidentally flip and unlock, and the pressing operation is simple and quick, significantly improving the safety of the toolbox under moving and bumpy conditions.

[0025] Preferably, the drawer's outer side panel has a channel that runs through the outer side wall and the inner side wall. The channel includes a first channel and a second channel that are connected. The top of the latch extends and retracts within the first channel, and the drive end of the pull ring rotates within the second channel. The outer opening of the second channel is located outside the outer side panel. The partitioning of the first and second channels ensures that the latch and the drive end do not interfere with each other. The outer opening facilitates assembly and maintenance. The overall structure is concealed within the outer side panel, resulting in a better overall appearance. Attached Figure Description

[0026] Figure 1 This is an exploded view of the pull-ring lock for a toolbox according to the present invention; Figure 2 This is a schematic diagram of the overall structure of the pull ring lock of the present invention installed on a drawer; Figure 3 This is a schematic diagram of the structure of the pull ring rotating base of the present invention; Figure 4 This is a schematic diagram of the pull ring structure of the present invention; Figure 5 This is a schematic diagram of the drawer of the present invention from one perspective; Figure 6 This is a schematic diagram of the drawer of the present invention from a second perspective; Figure 7 This is an exploded view of the drawer, pull ring, linkage mechanism, and lock cylinder of the present invention. Figure 8 This is a schematic diagram of the assembly of the positioning block and the locking tongue of the present invention; Figure 9 This is a schematic cross-sectional view of the assembly of the locking tongue, elastic structure, and outer side plate of the present invention. Figure 10 This is a schematic diagram of the cross-sectional structure of the locking tongue embedded in the positioning hole in the locked state of the present invention; Figure 11 This is a schematic diagram of the linkage mechanism and lock cylinder of the present invention in the locked state; Figure 12 This is a schematic diagram of the cross-sectional structure of the latch retracted in the unlocked state of the present invention; Figure 13 This is a schematic diagram of the linkage mechanism of the present invention in the unlocked state.

[0027] In the diagram: 1. Lock body; 2. Pull ring; 21. Hinge shaft; 22. Drive end; 3. Lock cylinder; 31. Lock tongue; 311. Annular protrusion; 4. Toolbox bottom plate; 5. Positioning hole; 6. Pull ring rotating base; 61. First base; 611. Notch; 62. Second base; 621. Hinge hole; 7. Positioning block; 71. Through hole; 8. Coil spring; 9. Press-type limiting component; 11. Drawer; 12. Outer panel; 121. First channel; 122. Second channel. Detailed Implementation

[0028] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are only for illustrating the present invention and are not intended to limit the scope of protection of the present invention. Any equivalent substitutions or improvements made by those skilled in the art without departing from the concept of the present invention should be included within the scope of protection of the present invention.

[0029] like Figures 1 to 3 As shown, this invention provides a pull-ring lock for a toolbox, mainly comprising a lock body 1, a pull ring 2, a lock cylinder 3, a linkage mechanism, and an elastic structure. This lock is installed on the drawer 11 of the toolbox to lock or unlock the drawer 11 from the bottom plate 4 of the toolbox.

[0030] The lock body 1 is mounted on the outer side panel 12 of the drawer 11. The outer side panel 12 is the panel facing outward from the drawer 11, with its outer side accessible to the operator and its inner side facing the internal space of the drawer 11. The outer side panel 12 has an inner cavity for accommodating the lock cylinder 3 and related actuating components, and the inner cavity is formed during injection molding.

[0031] The pull ring 2 is U-shaped, with its two ends rotatably connected to the outer side panel 12 of the drawer 11. The pull ring 2 has two states: in the locked state, the pull ring 2 is attached to the outer surface of the outer side panel 12 of the drawer 11. At this time, the pull ring 2 not only plays a locking role, but can also be used as a handle to pull out the drawer 11; in the unlocked state, the pull ring 2 flips outward, forming a certain angle (preferably perpendicular) with the outer side panel 12, at which time the drawer 11 can be operated to pull out.

[0032] like Figure 3 As shown, the outer side of the outer plate 12 is provided with a pull ring rotating base 6 for supporting both ends of the pull ring 2 and achieving a rotatable connection. The pull ring rotating base 6 includes a first base 61 at the top and a second base 62 at the bottom. The bottom of the first base 61 has a notch 611, which provides space for the pull ring 2 to flip. Both ends of the second base 62 have hinge holes 621. The two ends of the pull ring 2 are respectively inserted into the hinge holes 621 on the corresponding side to form a rotatable connection.

[0033] like Figure 4As shown, the two ends of the pull ring 2 are bent inward, and each end is provided with a hinge shaft 21. The hinge shaft 21 is engaged with the hinge hole 621 on the second base 62. The side wall of the pull ring 2 near the end is provided with an inward-facing drive end 22. The drive end 22 forms part of the linkage mechanism and is used to drive the lock cylinder 3 to move up and down when the pull ring 2 is flipped.

[0034] like Figures 5 to 8 As shown, the lock cylinder 3 is installed in the inner cavity of the outer side panel 12 of the drawer 11. The bottom of the lock cylinder 3 has a latch 31, which can extend and retract linearly towards the toolbox bottom plate 4. In the locked state, the latch 31 extends downwards and embeds into the positioning hole 5 of the toolbox bottom plate 4, thereby preventing the drawer 11 from moving relative to the toolbox bottom plate 4; in the unlocked state, the latch 31 retracts completely into the lock cylinder 3, disengaging from the positioning hole 5, and the drawer 11 can be freely pulled out.

[0035] To achieve precise positioning of the latch 31, the toolbox base plate 4 has a downward-facing mounting hole, and a positioning block 7 is installed inside the mounting hole. The positioning block 7 has a through hole 71, and the top of the latch 31 can move in and out of the through hole 71. The middle of the latch 31 has an annular protrusion 311, and the bottom annular step of the annular protrusion 311 abuts against or separates from the top surface of the positioning block 7, which is used to limit the downward extension distance of the latch 31 and prevent the latch 31 from over-extending or dislodging.

[0036] The elastic structure is preferably a helical spring 8. The helical spring 8 is sleeved on the latch 31, with its top abutting against the inner stepped surface of the through hole 71 of the positioning block 7, and its bottom abutting against the bottom annular step of the annular protrusion 311, providing preload force to keep the latch 31 away from the positioning hole 5. In the unlocked state, the helical spring 8 pushes the latch 31 upwards, causing the latch 31 to retract; in the locked state, the linkage mechanism drives the latch 31 downwards, compressing the helical spring 8 until the bottom annular step of the annular protrusion 311 abuts against the top surface of the positioning block 7, at which point the latch 31 is stably embedded in the positioning hole 5.

[0037] like Figures 9 to 10 As shown, a channel is provided on the outer side plate 12, penetrating the outer side wall and the inner side wall. This channel includes a first channel 121 and a second channel 122 that communicate with each other. The top of the locking tongue 31 extends and retracts within the first channel 121, and the driving end 22 of the pull ring 2 rotates within the second channel 122. The outer opening of the second channel 122 is located outside the outer side plate 12, facilitating the connection between the driving end 22 and the pull ring 2.

[0038] like Figures 11 to 13As shown, the working principle of the linkage mechanism is as follows: When the pull ring 2 is in the retracted locked state, the drive end 22 is located below the second channel 122. The drive end 22 pushes the top of the latch 31 or the transmission component connected to it downwards, so that the latch 31 overcomes the elastic force of the coil spring 8 and extends downwards and is embedded in the positioning hole 5. When the pull ring 2 is flipped outwards to the unlocked state, the drive end 22 rotates with the pull ring 2 and moves upwards into the notch 611 of the first base 61. At this time, the drive end 22 separates from the latch 31, freeing up space for the top of the latch 31 to rise. Under the restoring force of the coil spring 8, the latch 31 retracts upwards into the lock cylinder 3, realizing unlocking.

[0039] like Figure 6 and Figure 7 As shown, to further enhance safety, a push-button stop 9 is provided on the upper part of the outer side panel 12 of drawer 11. When the pull ring 2 is in the retracted locked position, the push-button stop 9 can lock the pull ring 2 to prevent it from accidentally flipping over due to accidental contact or vibration. When unlocking is required, external force overcomes the push-button stop 9 to release the restriction on the pull ring 2, and then the pull ring 2 can be flipped outward.

[0040] The working process of this invention is as follows: Locking process: After pushing drawer 11 into the toolbox, flip the pull ring 2 upwards so that it fits against the outer panel 12. During this process, the drive end 22 of the pull ring 2 rotates around the hinge axis 21 and moves downwards. The drive end 22 pushes the locking tongue 31 downwards, compressing the coil spring 8 until the locking tongue 31 is embedded in the positioning hole 5 of the toolbox bottom plate 4. At the same time, the bottom annular step of the annular protrusion 311 abuts against the top surface of the positioning block 7, completing the locking. Simultaneously, the top of the pull ring 2 abuts against the push-type limiter 9, thereby locking the pull ring 2 in the retracted position.

[0041] Unlocking process: An external force pulls the pull ring 2, overcoming the pressing limit member 9, releasing the limit on the pull ring 2, and then flips the pull ring 2 outward. The driving end 22 of the pull ring 2 moves upward and rotates into the notch 611 of the first base 61, separating from the locking tongue 31. Under the restoring force of the coil spring 8, the locking tongue 31 retracts upward, disengaging from the positioning hole 5, and the drawer 11 can be freely pulled out. The above description is only an embodiment of the present invention. Common knowledge such as specific structures and characteristics known in the solution is not described in detail here. Those skilled in the art know all the common technical knowledge in the technical field of the invention before the application date or priority date, can know all the prior art in the field, and have the ability to apply conventional experimental methods before that date. Those skilled in the art can improve and implement this solution under the guidance of the present application and in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A pull-ring lock for a toolbox, characterized in that: The lock body (1) is installed on the outer side panel (12) of the toolbox drawer (11); Pull ring (2), which is U-shaped and whose two ends are rotatably connected to the outer side panel (12) of the drawer (11), has two states: in the locked state it is attached to the drawer (11), and in the unlocked state it flips outward; The lock cylinder (3) is installed in the inner cavity of the outer side panel (12) of the drawer (11). The bottom of the lock cylinder (3) is provided with a lock tongue (31), which extends and retracts linearly toward the bottom plate (4) of the toolbox. In the locked state, the lock tongue (31) extends downward and is embedded in the positioning hole (5) of the bottom plate (4) of the toolbox. In the unlocked state, the lock tongue (31) is completely retracted into the lock cylinder (3). The linkage mechanism is installed on the rotating end of the pull ring (2) and rotates with the pull ring (2). The linkage mechanism is connected to the lock cylinder (3) and is used to drive the lock cylinder (3) to extend and retract up and down. In the unlocked state, the linkage mechanism (4) separates from the lock cylinder (3) and makes room for the lock cylinder (3) to move upward, so that the bolt (31) retracts to the unlocked state. In the locked state, the linkage mechanism (4) drives the lock cylinder (3) downward, so that the bolt (31) extends to the locked state. An elastic structure, mounted on the latch (31), is used to provide preload force to the latch (31) away from the positioning hole (5).

2. The pull-ring lock for a toolbox according to claim 1, characterized in that: The outer side of the outer plate (12) is provided with a pull ring rotating base (6). The pull ring rotating base (6) includes a first base (61) at the top and a second base (62) at the bottom. The bottom of the first base (61) is provided with a notch (611). The ends of both ends of the second base (62) are provided with hinge holes (621). The two ends of the pull ring (2) are respectively embedded in the hinge holes (621) on the corresponding side, and the two are rotatably connected.

3. The pull-ring lock for a toolbox according to claim 2, characterized in that: The two ends of the pull ring (2) are bent inward and each end has a hinge shaft (21) connected to a hinge hole (621). The pull ring (2) has an inward-facing drive end (22) on the side wall near the end. In the unlocked state, the drive end (22) is located in a notch (611) to provide space for the top of the latch (31) to rise. In the locked state, the drive end (22) rotates and compresses the latch (31) to extend downward to the bottom of the drawer (11).

4. The pull-ring lock for a toolbox according to claim 1, characterized in that: The toolbox base plate (4) is provided with a downward-facing mounting hole. A positioning block (7) is provided in the mounting hole. The positioning block (7) is provided with a through hole (71). The top of the latch (31) moves in and out of the through hole (71). The middle part of the latch (31) is provided with an annular protrusion (311). The bottom annular step of the annular protrusion (311) abuts against or separates from the top surface of the positioning block (7) for positioning the downward extension distance of the latch (31).

5. The pull-ring lock for a toolbox according to claim 4, characterized in that: The elastic structure is a helical spring (8). The top of the helical spring (8) abuts against the inner step surface of the through hole (71) of the positioning block (7), and the top abuts against the bottom annular step of the annular protrusion (311), providing a preload force for the locking tongue (31) to move away from the positioning hole (5). In the unlocked state, the helical spring (8) pushes the locking tongue (31) upward. In the locked state, the linkage mechanism drives the locking tongue (31) downward and squeezes the spring (8), so that the bottom annular step of the annular protrusion (311) abuts against the top surface of the positioning block (7).

6. The pull-ring lock for a toolbox according to claim 1, characterized in that: When the pull ring (2) is in contact with the outer side panel (12) of the drawer (11), the drawer (11) and the toolbox are locked; when the pull ring (2) is perpendicular to the outer side panel (12) of the drawer (11), the drawer (11) and the toolbox are unlocked. The AAA according to claim 3 is characterized in that...

7. The pull-ring lock for a toolbox according to claim 1, characterized in that: The upper part of the outer side panel (12) of the drawer (11) is also provided with a press-type limiting member (9), which is used to lock the pull ring (2) when it is in the closed position.

8. The pull-ring lock for a toolbox according to claim 3, characterized in that: The outer panel (12) of the drawer (11) has a channel that runs through the outer wall and the inner wall. The channel includes a first channel (121) and a second channel (122) that are connected. The top of the latch (31) extends and retracts in the first channel (121). The drive end (22) of the pull ring (2) rotates in the second channel (122). The outer opening of the second channel (122) is located outside the outer panel (12).

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